Q. No.Match the following list of bioactive substances and their roles:
Bioactive
Substance Role
A.
Statin
i.
Removal of oil stains
B.
Cyclosporin A
ii.
Removal of clots from blood vessels
C.
Streptokinase
iii.
Lowering of blood cholesterol
D.
Lipase
iv.
Immuno-suppressive agent
Choose the correct match:
1. A-ii, B-iii, C-i, D-iv 2. A-iv, B-ii, C-i, D-iii 3. A-iv, B-i, C-ii, D-iii 4. A-iii, B-iv, C-ii, D-i
The primary treatment of wastewater involves the removal of:
| 1. | dissolved impurities | 2. | stable particles |
| 3. | toxic substances | 4. | harmful bacteria |
The technology of biogas production from cow dung was developed in India largely due to the efforts of:
| 1. | Gas Authority of India |
| 2. | Oil and Natural Gas Commission |
| 3. | Indian Agricultural Research Institute and Khadi & Village Industries Commission |
| 4. | Indian Oil Corporation |
The free-living fungus Trichoderma can be used for:
1. killing insects
2. biological control of plant diseases
3. controlling butterfly caterpillars
4. producing antibiotics
Mycorrhiza does not help the host plant in:
| 1. | Enhancing its phosphorus uptake capacity |
| 2. | Increasing its tolerance to drought |
| 3. | Enhancing its resistance to root pathogens |
| 4. | Increasing its resistance to insects |
Which one of the following is not a nitrogen-fixing organism?
| 1. | Anabaena | 2. | Nostoc |
| 3. | Azotobacter | 4. | Pseudomonas |
Big holes in Swiss cheese are made by:
| 1. | a machine |
| 2. | a bacterium that produces methane gas |
| 3. | a bacterium producing a large amount of carbon dioxide |
| 4. | a fungus that releases a lot of gases during its metabolic activities. |
The residue left after methane production from cattle dung is:
| 1. | burnt | 2. | buried in landfills |
| 3. | used as manure | 4. | used in civil construction |
Match the items in Column ‘A’ and Column ‘B’ and choose the correct answer:
| Column I | Column II | ||
| A. | Lady bird | i. | Methanobacterium |
| B. | Mycorrhiza | ii. | Trichoderma |
| C. | Biological control | iii. | Aphids |
| D. | Biogas | iv. | Glomus |
The correct answer is:
1. A-ii, B-iv, C-iii, D-i
2. A-iii, B-iv, C-ii, D-i
3. A-iv, B-i, C-ii, D-iii
4. A-iii, B-ii, C-i, D-iv
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